Lung Infections: Common Types and How to Treat Them

A lung infection happens when a virus, bacteria, or fungus gets into the lungs. Immune cells race to the airways to fight the infection, causing inflammation. Chest congestion, difficulty breathing, coughing, wheezing, and fever are the result. Lung infections can be caused by pneumonia, influenza, COVID-19, the common cold, and other upper respiratory illnesses.

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Source: Verywell health